add imoprtant on checked class
refine the instruction in skeleton task
Merge branch 'master' of heroku.com:wireframe-prototyping
skeleton task currently only support on example_id in the pattern
modify task description and style
readd selection task back....
Merge branch 'master' of heroku.com:wireframe-prototyping
refine some text in skeleton.html
fix style
minor bug wrote by janet (can't load worker name to ajax)
fix workername issue
add preview mode to the skeleton task
Merge branch 'master' of heroku.com:wireframe-prototyping
select task
Merge branch 'master' of heroku.com:wireframe-prototyping
description change in selection task
remove alert in selection
add limit for at least three kinds ui components and at most 5 ui
components
change limit to just at least 3 ui comp
add verification ui stuff